Polyethyleneoxy azo fugitive tints



3,154,535 Patented Oct. 27, 1964 United States Patent "ice 3,154,535 POLYETHYLENEOXY AZO FUGITIVE TENTS Arthur D. Graham, Jan, Spartanhurg, S.C., assignor to Deer-ing Miililren Research Corporation, Spartanburg,

53.6., a corporation of Delaware No Drawing. Filed Jan. 30, 1562, Ser. No. 169,962 1 Claim. (Cl. 260-498) This invention relates to novel blue tints having sub- R2 0 Ra HOCHzCHt H(OCH2C 2)u CHg-CH2 N N R1 R1 11 III llNaNOg 21101 R2 R2 moornom). Hwomom). 1101 2211, E01 /N -NH2 /N -N0 R1 21101 R;

IV lNaNofi 21101 s M038 N R2 R4 H(OOH2OH2)1J I VII /N' NEN NfizCOa B1 C1 VI stantially complete fugitivity for substantially all tex- With the exception of Compound II, where n is 1 when tile fibers.

R is H(OCH CH R R R R n and M the values The novel tints of this invention have the formula given above.

The following preparations and examples are illustrative of the compounds of this invention and methods for their preparation. Ra OH H(OCH2CH2)Q\ I l PREPARATION I R3 One mole (182 g.) of N,N-di-(hydroxyethyl)-aniline, R1 (II; R =HOCH CH R =H) in a flask equipped with Mots stirrer, thermometer and gas inlet tube near the bottom I R4 and a gas outlet tube near the top of the flask, is heated to 140 C. under nitrogen. About 200 mg. of sodium is added as catalyst. Ethylene oxide is bubbled into the molten, vigorously stirred material at a rate such that g gfg fi gfig i gigg g: 5: 3: g gg gggi a slight amount of gas escapes from the outlet tube.

aryl, alkyl, alkaryl or aralkyl; R 18 hydrogen, alkyl, aryl, ggi ig g igz 1:3; i:ggl bgvtgg figt i i oigggg alkaryl aralkyl or alkoxy; R3 i i hydrlogen alkyl until about 98 moles (3 312 g.) of ethylene oxide has g gg g iiig glhgi g f i Q reacted, thus producing N,N-(dihydroxyethylpolyethyln is preferably between about 25 and 100: and more Prefl eneoxy)-an1lme contalmng a total of about 100 ethyleneerably between about 35 and 75; at least one of R R (my groups PREPARATION H and R; are hydrogen; and aryl, alkyl alkaryl, aralkyl and alkoxy preferably contain from one to twelve car- About 1 mole (4,500 g.) of N,N-di(hydroxyethylpolybon atoms, and preferably are hydrocarbon, e.g., phenyl, 6O ethyleneoxy)-aniline obtained according to the procedure naphthyl, methyl, ethyl, propyl, tolyl, mesityl, benzyl, of Preparation I (III; R =H(OCH CH 11:50, phenethyl, etc., any substituents thereon being of a non- R =H) is dissolved in a mixture of 4 liters of water functional and non-reactive nature which will not interand 2.14 moles (206.6 g.) of 37.8% hydrochloric acid. fere in the reactions described below for preparing such The mixture is cooled to (l-5 C. and with stirring a socompounds. When R is other than I-l(OCH CH n lution of 1.07 moles (74 g.) of sodium nitrite in 250 is preferably twice the above values. ml. of water is added over a 30 minute period, maintain- These tints have a blue color, generally with a reddish ing the mixture at that temperature and continuing the cast, have good light-fastness and are very fugitive with stirring for an additional 30 minutes when the addition respect to all textile fibers, according to the standards is complete. There is thus-produced the p-nitroso deset forth by the industry for fugitive tints useful for tem- 7O rivative of the starting compound, which compound porarily identifying fibers, yarns or fabrics. should immediately thereafter be reduced to the more It is diflicult to obtain blue universally fugitive tints stable p-amino derivative.

3 PREPARATION 111 To the cool solution obtained according to Preparation II, containing the N,N-di(hydroxyethylpolyethyleneoxy)-p-nitroso-aniline (IV; R =H(OCH CH n=50, R =H), is added 7 moles (676 g.) of 37.8% hydrochloric acid with stirring followed by 3.5 moles (225 g.) of zinc dust. One-half of the latter is added over a thirty minute period followed, fifteen minutes later, by the remaining half over an additional thirty minute period. Stirring is continued until the characteristic yellow compound of the nitroso compound disappears, keeping the temperature at all times below 20 C. The excess zinc is removed by filtration leaving a clear solution containing the hydrochloric acid salt of N,N-di(hydroxyethylpolyethyleneoxy)-phenylenediamine.

PREPARATION IV To the solution obtained according to the procedure of Preparation III containing the hydrochloric acid salt of N,N di(hydroxyethylpolyethyleneoxy) phenylenediamine (V; R =H(OCH CH 11:50, R =H), is added 193 grams of 37.8% hydrochloric acid and the mixture is cooled to C. With vigorous stirring and cooling to maintain the temperature below about 5 C., a solution of 1.01 mole (70 g.) of sodium nitrite in 280 ml. of water is quickly added. After 30 minutes, the excess nitrous acid is destroyed with sulfamic acid to provide a negative starch-iodide test. The solution is then carefully brought to a pH of 4 with dilute aqueous sodium carbonate, to provide the diazonium salt of, N,N-di(hydroxyethylpolyethyleneoxy) -phenylenediamine Following the procedure of Preparations IIV, other compounds represented by Formula II, e.g., N,N-di(hydroxyethyl)-substituted o-toluidine, o-anisidine, o-diphenylamine, o-benzylaniline, o-tolylaniline, o-phenethylaniline and N-hydroxyethyl-substituted N-methylaniline, N-ethylaniline, N-phenylaniline, N-benzylaniline, N-tolylaniline, N-phenethylaniline, N methyl o toluidine, N- methyl-o-anisidine, N-methyl-o-benzylaniline, and N- methyl-o-phenyl-aniline, are converted to the corresponding diazonium salts, i.e., compounds represented by Formula VI containing a total of about 100 polyethyleneoxy groups.

Similarly, the N,N-di(hydroxyethylpolyethyleneoxy) and N hydroxyethylpolyethyleneoxy diazonium compounds represented by Formula VI and containing a total of about 15, 30, 50, 75, 100, 250 or 500 ethyleneoxy groups, and otherwise corresponding to the above-named compounds are prepared from the corresponding N-hydroxyethyl compounds represented by Formula II by varying the amount of ethylene oxide reacted with the N-hydroxyethyl compound in the reaction described in Preparation I.

Examples 7 One mole, calculated on the basis of pure material, of 6-anilino-l-naphthol-S-sulfonic acid (phenyl J acid) is dissolved in 1 liter of water and the solution brought to neutrality with sodium carbonate. To this solution is then added 4.5 moles (477 g.) of sodium carbonate and 200 g. of ice. To this cold solution is slowly added with vigorous stirring the still cold solution of the diazonium salt of N,N-di(hydroxyethylpolyethyleneoxy)-phenylenediamine (VI, R =H(OCH CH 11:50, R =H) obtained according to the procedure of Preparation IV. The reddish-blue tint is formed almost immediately. After one hour the mixture is filtered and neutralized with hydrochloric acid to a pH of 7. The tint is isolated by evaporation of the water at about C. under vacuum, dissolving the tint in benzene, toluene or xylene, filtering salts which precipitate, and distilling the solvent. A melt of the purified tint is obtained which solidifies on cooling.

Following the procedure of the above-described reaction, each of the diazonium compounds named in the paragraph following Preparation 1V containing a total of ethyleneoxy groups react with 6 -anilino-1- naphthol-3-sulfonic acid to produce the corresponding coupling reaction product, i.e., compounds represented by Formula I wherein R is H, R, is phenyl and, in the first six of the above described compounds, R is H(OCH CH n is about 50, and R is methyl, methoxy, phenyl, benzyl, tolyl, and phenethyl, respectively, and in the remaining compounds it is about 100, and R and R are methyl and H, ethyl and H, phenyl and H, benzyl and H, tolyl and H, phenethyl and H, methyl and methyl, methyl and methoxy, methyl and benzyl, and methyl and phenyl, respectively.

Substituting other 6-amino substituted 1-naphthol-3- sulfonic acids, e.g., 6-amino-, 6-methylamino-, 6-ethylamino-, 6 -benzylamino-, 6 tolylamino-, 6 -phenethylamino, 6-dimethylamino-, 6-methyl,ethylamino-, 6-methylanilino-, 6 -methyl,benzylamino-, 6 -methyl,phenethylamino-, 6 methyl,toluidinoand 6 diphenylamino 1- naphthol-3-sulfonic acid, in the above described coupling reaction with each of the above-named diazonium compounds produces the corresponding 6-amino-substituted-1- naphthol-B-sulfonic acid coupling reaction product (I).

Similarly, the N,N-di(hydroxyethylpolyethyleneoxy) and N-hydroxyethylpolyethyleneoxy compounds containing a total of about 15, 30, 50, 75, 100, 250 or 500 ethyleneoxy groups and otherwise corresponding to the above-named diazonium salts (VI) can be coupled with each of the above-described 6 amino substituted 1- naphthol-S-sulfonic acids to produce other fugitive tints of this invention represented by Formula I.

I claim:

A compound of the formula H moomcm). I

Na0 S N wherein n is about 50.

References Cited in the file of this patent UNITED STATES PATENTS 2,131,712 Schoeller et a1. Sept. 27, 1938 

